docs(cheatsheet): copy edit bootstrapping.md (#11149)
docs(cheatsheet): copy edit bootstrapping.md (#11149)

Also remove Dart-specific code, since the Dart cheatsheet is produced
from dart-lang/angular2.
sarunint/angular,gjungb/angular,ocombe/angular,vinagreti/angular,ocombe/angular,Flounn/angular,smartm0use/angular,jasonaden/angular,AlmogShaul/angular,panuruj/angular,kwalrath/angular,templth/angular,nosovk/angular,not-for-me/angular,smartm0use/angular,gdi2290/angular,JiaLiPassion/angular,AlmogShaul/angular,IgorMinar/angular,mgol/angular,naomiblack/angular,IdeaBlade/angular,cassand/angular,souvikbasu/angular,kwalrath/angular,AlmogShaul/angular,jasonaden/angular,Toxicable/angular,mgiambalvo/angular,Flounn/angular,mlaval/angular,vamsivarikuti/angular,angular/angular,Brocco/angular,wKoza/angular,robwormald/angular,SekibOmazic/angular,jonrimmer/angular,snaptech/angular,gnomeontherun/angular,mprobst/angular,kylecordes/angular,ultrasonicsoft/angular,robwormald/angular,tbosch/angular,blesh/angular,NathanWalker/angular,graveto/angular,sarunint/angular,pk-karthik/framework-js-angular,JiaLiPassion/angular,jesperronn/angular,aboveyou00/angular,Flounn/angular,juristr/angular,vicb/angular,vamsivarikuti/angular,kegluneq/angular,Brocco/angular,IgorMinar/angular,cexbrayat/angular,meeroslav/angular,blesh/angular,mgiambalvo/angular,asnowwolf/angular,alamgird/angular,manekinekko/angular,Brocco/angular,graveto/angular,jesperronn/angular,chalin/angular,chuckjaz/angular,shairez/angular,souvikbasu/angular,heathkit/angular,LucasSloan/angular,vicb/angular,chajath/angular,SekibOmazic/angular,mdegoo/angular,Mathou54/angular,laskoviymishka/angular,mgechev/angular,gnomeontherun/angular,cexbrayat/angular,matsko/angular,vinagreti/angular,alamgird/angular,jesperronn/angular,mprobst/angular,kara/angular,vsavkin/angular,not-for-me/angular,diestrin/angular,naomiblack/angular,alxhub/angular,angularbrasil/angular,cironunes/angular,dejour/angular,trshafer/angular,vandres/angular,dydek/angular,Toxicable/angular,kwalrath/angular,e-hein/angular,jonrimmer/angular,tolemac/angular,vinagreti/angular,SekibOmazic/angular,LucasSloan/angular,dtoroshin/n2oDoc,awerlang/angular,alexeagle/angular,vandres/angular,mgol/angular,pk-karthik/framework-js-angular,dsebastien/angular,IdeaBlade/angular,laskoviymishka/angular,jasonaden/angular,sarunint/angular,graveto/angular,xcaliber-tech/angular,mdegoo/angular,smartm0use/angular,awerlang/angular,xcaliber-tech/angular,hansl/angular,templth/angular,dsebastien/angular,panuruj/angular,kara/angular,kegluneq/angular,blesh/angular,cironunes/angular,souvikbasu/angular,pk-karthik/framework-js-angular,mlaval/angular,alxhub/angular,juristr/angular,not-for-me/angular,dydek/angular,chrisse27/angular,ollie314/angular,mikeybyker/angular,wKoza/angular,Brocco/angular,domusofsail/angular,jonrimmer/angular,brandonroberts/angular,tolemac/angular,dejour/angular,manekinekko/angular,asnowwolf/angular,domusofsail/angular,alexeagle/angular,mzgol/angular,tbosch/angular,naomiblack/angular,chajath/angular,jesperronn/angular,matsko/angular,mgol/angular,dtoroshin/n2oDoc,jesperronn/angular,laskoviymishka/angular,vicb/angular,diestrin/angular,tolemac/angular,StephenFluin/angular,mhevery/angular,petebacondarwin/angular,angular/angular,Flounn/angular,ValtoFrameworks/Angular-2,snaptech/angular,tbosch/angular,petebacondarwin/angular,angularbrasil/angular,vicb/angular,filipesilva/angular,brandonroberts/angular,pkozlowski-opensource/angular,heathkit/angular,juristr/angular,vinagreti/angular,filipesilva/angular,kylecordes/angular,alexeagle/angular,angularbrasil/angular,panuruj/angular,vsavkin/angular,robwormald/angular,mhevery/angular,gkalpak/angular,Flounn/angular,SaltyDH/angular,SekibOmazic/angular,SekibOmazic/angular,juristr/angular,gdi2290/angular,rkirov/angular,chalin/angular,Brocco/angular,kara/angular,juleskremer/angular,laskoviymishka/angular,kylecordes/angular,nosovk/angular,ghetolay/angular,ValtoFrameworks/Angular-2,gjungb/angular,mikeybyker/angular,itamark/angular,mgol/angular,trshafer/angular,cassand/angular,mgechev/angular,chuckjaz/angular,rkirov/angular,dydek/angular,chajath/angular,mgiambalvo/angular,wKoza/angular,mgiambalvo/angular,royling/angular,dsebastien/angular,matsko/angular,tbosch/angular,ollie314/angular,mzgol/angular,kwalrath/angular,pk-karthik/framework-js-angular,dydek/angular,mlaval/angular,shairez/angular,JSMike/angular,sarunint/angular,gnomeontherun/angular,cexbrayat/angular,dsebastien/angular,sjtrimble/angular,meeroslav/angular,mzgol/angular,JiaLiPassion/angular,ultrasonicsoft/angular,aboveyou00/angular,vikerman/angular,manekinekko/angular,petebacondarwin/angular,vikerman/angular,cironunes/angular,Mathou54/angular,itamark/angular,chrisse27/angular,heathkit/angular,matsko/angular,mgiambalvo/angular,JiaLiPassion/angular,brandonroberts/angular,ollie314/angular,snaptech/angular,royling/angular,NathanWalker/angular,jonrimmer/angular,sjtrimble/angular,petebacondarwin/angular,Toxicable/angular,kegluneq/angular,angular-indonesia/angular,chajath/angular,aboveyou00/angular,sjtrimble/angular,mhevery/angular,vamsivarikuti/angular,vsavkin/angular,mlaval/angular,rkirov/angular,kylecordes/angular,mzgol/angular,SaltyDH/angular,StephenFluin/angular,vinagreti/angular,graveto/angular,dydek/angular,gjungb/angular,mgechev/angular,StephenFluin/angular,gdi2290/angular,IdeaBlade/angular,angularbrasil/angular,dsebastien/angular,chuckjaz/angular,robwormald/angular,IgorMinar/angular,ValtoFrameworks/Angular-2,alexeagle/angular,tbosch/angular,filipesilva/angular,gjungb/angular,StephenFluin/angular,rjamet/angular,cironunes/angular,mgol/angular,shairez/angular,vandres/angular,filipesilva/angular,rkirov/angular,ghetolay/angular,NathanWalker/angular,heathkit/angular,dtoroshin/n2oDoc,e-hein/angular,Toxicable/angular,ocombe/angular,ValtoFrameworks/Angular-2,mzgol/angular,mikeybyker/angular,jonrimmer/angular,gdi2290/angular,IgorMinar/angular,souvikbasu/angular,juleskremer/angular,aboveyou00/angular,mlaval/angular,wKoza/angular,royling/angular,cassand/angular,alamgird/angular,xcaliber-tech/angular,petebacondarwin/angular,domusofsail/angular,alxhub/angular,angular-indonesia/angular,xcaliber-tech/angular,JSMike/angular,snaptech/angular,rkirov/angular,JanStureNielsen/angular,IgorMinar/angular,ultrasonicsoft/angular,ollie314/angular,naomiblack/angular,IdeaBlade/angular,juristr/angular,kylecordes/angular,asnowwolf/angular,SekibOmazic/angular,nosovk/angular,templth/angular,SaltyDH/angular,royling/angular,manekinekko/angular,robwormald/angular,vsavkin/angular,vikerman/angular,nosovk/angular,diestrin/angular,not-for-me/angular,Brocco/angular,AlmogShaul/angular,shairez/angular,mprobst/angular,angular-indonesia/angular,panuruj/angular,ValtoFrameworks/Angular-2,ultrasonicsoft/angular,blesh/angular,domusofsail/angular,graveto/angular,cassand/angular,asnowwolf/angular,souvikbasu/angular,brandonroberts/angular,e-hein/angular,mprobst/angular,hansl/angular,kara/angular,hansl/angular,LucasSloan/angular,tolemac/angular,sarunint/angular,naomiblack/angular,pkozlowski-opensource/angular,juleskremer/angular,templth/angular,chrisse27/angular,chalin/angular,trshafer/angular,hansl/angular,domusofsail/angular,gdi2290/angular,kara/angular,mgol/angular,dejour/angular,angularbrasil/angular,Mathou54/angular,JanStureNielsen/angular,chuckjaz/angular,gkalpak/angular,heathkit/angular,heathkit/angular,mdegoo/angular,ghetolay/angular,angular/angular,NathanWalker/angular,sarunint/angular,mprobst/angular,dtoroshin/n2oDoc,mgechev/angular,meeroslav/angular,ultrasonicsoft/angular,vamsivarikuti/angular,aboveyou00/angular,xcaliber-tech/angular,jasonaden/angular,awerlang/angular,SaltyDH/angular,hansl/angular,chuckjaz/angular,nosovk/angular,juristr/angular,vikerman/angular,IdeaBlade/angular,dsebastien/angular,pkozlowski-opensource/angular,itamark/angular,jonrimmer/angular,alamgird/angular,vandres/angular,cironunes/angular,panuruj/angular,ultrasonicsoft/angular,pkozlowski-opensource/angular,vicb/angular,graveto/angular,kegluneq/angular,gdi2290/angular,ocombe/angular,alxhub/angular,LucasSloan/angular,tolemac/angular,mhevery/angular,asnowwolf/angular,meeroslav/angular,petebacondarwin/angular,vikerman/angular,wKoza/angular,rjamet/angular,StephenFluin/angular,mhevery/angular,angularbrasil/angular,e-hein/angular,juleskremer/angular,diestrin/angular,SaltyDH/angular,JanStureNielsen/angular,brandonroberts/angular,alxhub/angular,AlmogShaul/angular,NathanWalker/angular,juleskremer/angular,rkirov/angular,blesh/angular,vsavkin/angular,Mathou54/angular,alexeagle/angular,smartm0use/angular,royling/angular,vicb/angular,JSMike/angular,Toxicable/angular,cironunes/angular,sjtrimble/angular,Toxicable/angular,NathanWalker/angular,ghetolay/angular,gjungb/angular,mdegoo/angular,kegluneq/angular,JanStureNielsen/angular,mdegoo/angular,ghetolay/angular,robwormald/angular,snaptech/angular,jasonaden/angular,mgechev/angular,Mathou54/angular,JanStureNielsen/angular,shairez/angular,laskoviymishka/angular,ocombe/angular,angular/angular,rjamet/angular,snaptech/angular,smartm0use/angular,tolemac/angular,itamark/angular,awerlang/angular,JSMike/angular,vamsivarikuti/angular,mdegoo/angular,cexbrayat/angular,brandonroberts/angular,alamgird/angular,vikerman/angular,cexbrayat/angular,sjtrimble/angular,kwalrath/angular,chrisse27/angular,manekinekko/angular,cassand/angular,hansl/angular,mikeybyker/angular,kara/angular,wKoza/angular,dtoroshin/n2oDoc,trshafer/angular,filipesilva/angular,rjamet/angular,cassand/angular,gkalpak/angular,chuckjaz/angular,meeroslav/angular,JSMike/angular,not-for-me/angular,mzgol/angular,mikeybyker/angular,templth/angular,IgorMinar/angular,aboveyou00/angular,alexeagle/angular,mhevery/angular,dejour/angular,gkalpak/angular,awerlang/angular,vandres/angular,pkozlowski-opensource/angular,kegluneq/angular,jasonaden/angular,pk-karthik/framework-js-angular,ocombe/angular,ollie314/angular,e-hein/angular,trshafer/angular,trshafer/angular,matsko/angular,manekinekko/angular,kylecordes/angular,itamark/angular,mprobst/angular,dejour/angular,gnomeontherun/angular,chalin/angular,chrisse27/angular,LucasSloan/angular,chajath/angular,LucasSloan/angular,angular-indonesia/angular